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Mr. Boost is a transparent workhorse designed with a boot-strapped power supply that delivers 27dB of boost and up to 12Vpp of clean output signal from a regular 9V supply. Most 9V boost pedals are limited to 6Vpp of headroom or less.

Mr. Boost plays well at any point in the signal chain and will nicely compliment your favorite tube amp.

Greenchild gear is designed with premium, audio-grade components and meticulous attention to detail. Our pedals will serve as valuable tools in your tone arsenal for many years to come. Semper utilis!

True bypass. Solid steel enclosure.

Made in USA!

*Power adapter and batteries not included

Product Reviews

Mr. Boost

Written by David Sesco on Nov 16th 2018

I just received my first pedal from Greenchild. It came in a nice satin bag, with a magnet, some picks and a hand written note from Mason. all of that is a very nice touch, but what is extra special is the pedal itself. I purchased a Mr. Boost clean boost. This thing is built like a tank, and it has an amazing amount of boost. I haven't tried it om my JCM800 halfstack as of yet, but I put it in front of my '70 Fender Champ and it transformed that little amp into a raging monster! I see more Greenchild products in my future. Keep up the excellent work Mason.

5/5

Mr. Boost Pedal

Written by Omar Devon Little on Nov 14th 2018

Here’s a Pedal builder who fiddles w electronics all day long,making overdrive and boost pedals, that’s all he does.
. His background is in electronics,engineering, an ex-military engineer, and he’s a musician..
I play with a very bluesy, natural sounding guitar tone.. Les Paul, or Tele with mild breakup, I like that natural sound, kinda bluesy/Stones-y..
I know my overdrives, I rejected about ten of them,sent them back,and used an old TS9 reissue for almost a decade, nothing else stacked up. I’m picky,and I know my tone, It’s been basically the same for years.. I know when a string gets old,or a tube needs changing..I can feel any changes in my tone..
Mr Boost is simple, it has 1 knob,made by hand in USA with all the military grade components, but for a cheapo price..
It looks modern, but it’s all classic.
It took my Marshall dsl40c & like others said before me, it “came alive”.
The boost still sounds like my Marshall, but it adds some of that perfectly EQ’ed sleazy,grindy,Rolling Stones mild dirty breakup... But it added something more, an aggressive edge..
A little touch of brightness and fatness simultaneously, I plugged it in and started Chuck Berry-ing some rock n roll rhythms, and couldn’t stop!!..
In a nutshell, this has that mild rock n roll breakup personified, I was able to NAIL that Angus Young tone, to perfection, the Kiss Les Paul sound, “Can You Hear Me Knockin’” and all these classic tones.. it nailed it.
One word is all I need to say, “Keeper” it’s a keeper..
I’m the pickiest drive pedal guy on earth..
and it passed MY test

5/5

Completely changed my tone!

Written by Nam Tang on Nov 4th 2018

I use this to slam my signal into a distortion/overdrive and it just brings out something else out of my tone! The large knob also makes adjusting on the fly with your foot a breeze too. I didn't know how much more my distortion was willing to give until using this! Definitely recommend to anyone wanting to drive their distortion/overdrive that much more.

5/5

Mr. Boost

Written by Tim Oliviere on Oct 27th 2018

Awesome pedal, glad I purchased this. Made very well & sounds great too!

5/5

Mr Boost

Written by Robert Reynolds on Oct 26th 2018

Mr Boost arrived at my house about 4 days after I ordered it . It was well packed , and arrived in perfect order . Opening the box , I was surprised and pleased to find guitar picks , a refrigerator magnet , and a silk like satchel containing Mr Boost .
I looked at it , and it's rock solid . Plugging in a Gibson SG Std , I could easily notice the increase in volume . I placed it in front of a chorus pedal , to boost the signal . I was able to turn my master volume down from 5 to 3 , and get the same volume , with Mr Boost activated . This is a GREAT pedal , and I strongly recommend anyone looking for a heavy duty boost pedal to get your hands on one before these guys realize that they're GIVING them away . This is a boutique quality , hand made , in the U.S.A. pedal , at a made in China price . Put this in your signal chain , and you will NOT be disappointed . I've bought a few pedals since 1979 , and believe me , I'll be buying more Greenchild pedals in the future ! Well worth the money , and a kick ass addition to ANY pedalboard ! Get yours quick , before everyone finds out how good they are , and they sell out!! Bob Reynolds Tucson AZ

5/5

Mr Boost

Written by Scott Tufts on Sep 21st 2018

Hi Mason, I received a card from you in the mail today thanking me for purchasing the K818, Mr Boost and the Valve a Reaper and a little swag. I think that’s the most thoughtful and coolest thing a company like yours has every done for me. I truly appreciate that. That goes a long way for me and I want you to know I’ll always will support small American business and you have earn a loyal customer for life. I think your pedals are outstanding and I love my Greenchild pedals. It’s these things that companies like yours do that makes me feel you care about your customers. Your products are second to none and my musician friends are impressed with my sound thanks to you. I mean every word of this. I have the Klazo Drive in my sights and will be my next acquisition. Thankyou, Thankyou and Thankyou. It my be a small thing for you but it’s these small things that mean a lot to someone like me.
Much appreciation and god bless.
Your friend, Scott Tufts

5/5

Mr. Boost - Two thumbs up!

Written by Stan Dolecki on Sep 19th 2018

In the gear world, sometimes you find something that not only delivers on the manufacturers promise, but actually gives you a little more. I am happily finding Mr. Boost to be one of those products.
This pedal is advertised as a “transparent boost”, a “workhorse pedal”, and that is exactly what it is. It brings out more of what is already going on between your amp and pickups. So far as I can tell, it doesn’t add color, but it gives your sound greater presence and dimension.
The real treat comes when you plug in and hit the switch. The overall effect of using the pedal in front of my Fender 68 DRR was like having the amp behind closed doors, and finally opening those doors. The sound just got bigger, more defined, and breathier.
My test rig was simple - guitar to pedal to amp. Regardless of which guitar I used, which pickup type or position, I found the pedal to have a playable, musical feel to it… the kind that makes you want to keep playing. It enhances play feel rather than impairing it, and I found that the rig remained touch sensitive and very responsive. I was able to make good use of the guitar volume knob to get what I wanted out of it, both sound and feel wise.
For me, the gold coin here is that you can pull big sound out of your tube amp at house friendly volumes. Of course that is completely subjective but my wife seems to agree. Sometimes you just gotta run with it.
The pedal is straight forward and simple to use. It has the features it needs, and does what it is supposed to do. If you are looking for a quality, great sounding clean boost, and at a great price point, you owe it to yourself to give this a try.